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Subsequent Events (Details) $ / shares in Units, $ in Millions | May 08, 2017 USD ($) ft² | May 03, 2017 USD ($) $ / shares | Apr. 21, 2017 USD ($) ft² | Apr. 01, 2017 USD ($) | Mar. 21, 2016 USD ($)
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Subsequent Events |  |  |  |  |
Amount of stock authorized to repurchase |  |  |  |  | $ 20.0
Total available authorization for share repurchases |  |  |  | $ 9.0 |
Subsequent Events |  |  |  |  |
Subsequent Events |  |  |  |  |
Common stock quarterly cash dividend declared (in dollars per share) | $ / shares |  | $ 0.14 |  |  |
Amount of stock authorized to repurchase |  | $ 20.0 |  |  |
Total available authorization for share repurchases |  | $ 29.0 |  |  |
Subsequent Events | New York, New York |  |  |  |  |
Subsequent Events |  |  |  |  |
Area of office space leased | ft² |  |  | 16,587 |  |
Annual base rent |  |  | $ 1.2 |  |
Increase of base rent after five years (as a percent) |  |  | 8.00% |  |
Base rent abatement |  |  | $ 1.2 |  |
Tenant improvement allowance |  |  | $ 1.4 |  |
Subsequent Events | Chicago, Illinois |  |  |  |  |
Subsequent Events |  |  |  |  |
Area of office space leased | ft² | 41,642 |  |  |  |
Lease extension term | 10 years |  |  |  |
Annual base rent | $ 1.1 |  |  |  |
Annual increases in base rent (as a percent) | 2.50% |  |  |  |
Base rent abatement | $ 0.9 |  |  |  |
Tenant improvement allowance | $ 2.3 |  |  |  |

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- Definition This element represents the annual base payments that the lessee is obligated to make in connection with a property under the terms of an agreement classified as an operating lease. + References No definition available. + Details
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- Definition The amount of base rent abatement under the terms of an agreement classified as an operating lease. + References No definition available. + Details
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- Definition Percentage increase in the base rent in the fifth fiscal year following the lease agreement effective date. + References No definition available. + Details
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- Definition Percentage increase annually in the base rent following the lease agreement effective date. + References No definition available. + Details
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- Definition Allowance granted by the landlord to a tenant to entice tenant to move into landlords building which will enable the tenant to prepare the leased premises for tenants occupancy. + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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